Hi, at least here in Germany Internet providers tend to do and not to do what they want. - Some cut off their clients every 24 hours (DSL) - Some block or slowdown particular tcp ports to get rid of peer-to-peer file sharing - Some redirect the first web access to any site to their own to force you to read their ads - Very few support multicast. When I asked my own provider, they didn't even know what this is. (They said 'no, because they don't support Linux'.) - IPv6? Huh? What's that? - At least one large provider blocks port 25 to certain IP addresses in order to force you to use the provider's mail relay and have the sender e-mail address replaced by the customers default address at the provider's domain. They say it's against spam, but I guess it's because they take money for opening the port and allowing to use SMTP and such any sender domain. - ... So it would be good to have some kind of standard or definition, what exactly an internet provider has to do and what to refrain from. Is there any? If not, shouldn't there be one? E.g. as an RFC? regards Hadmut _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf